SonaLab - Real-Time Vocal Analysis Software
(((PHILOSOPHY)))

Core Philosophy · The Three Balances

Every SonaLab analysis converges on three judgments: Phonation Balance, Dynamic Balance and Airflow Balance. Parameters are the raw material, charts are the windows, balances are the verdict.

The three faces of the prism are Phonation Balance, Dynamic Balance and Airflow Balance. The base holds the voice parameters, the middle stacks all 29 charts on L0–L3 tiers, and near the apex sit the three balance judgments. Points along the edges are parameters shared by two faces — 44 nodes and 48 relations in all.

Drag to rotate · Ctrl+scroll to zoom · click a node for relations · filter by face & tier (bottom-left)

Phonation Balance

发声平衡

Depth and ring together, held steady. The composite score reads resonance depth, singer’s formant and fold thickness, then subtracts compensatory throat tension.

Parameters

H1–H2第一谐波与第二谐波的能量差。数值高偏厚，数值低偏薄。Parameter guide
F1第一共振峰。偏低对应更深的共鸣与更低的喉位。Parameter guide
F2第二共振峰。和 F1 一起决定元音与舌位前后。Parameter guide
Larynx height喉头高低。发声平衡要求喉位相对稳定，而不是靠上提代偿。Parameter guide
Throat-voice energy喉外代偿造成的挤压成分。发声平衡评分会扣掉这一项。Parameter guide
SPR歌手共振峰比。2–4 kHz 高频能量与整体能量的比值，读声音的金属芯与穿透力。Shared edge · used here for ring: whether the 2–4 kHz metal core is present and strong enough.Parameter guide
NAQ归一化振幅商，读声门闭合效率——既不挤死也不漏气的程度。Shared edge · closure efficiency feeds this composite score, not just the airflow face.Parameter guide

L1 · Phonation Basics

Resonance Depth Detectionchart用 F1 判断共鸣偏深、居中还是偏浅。Larynx Positionchart连续观察喉位有没有在演唱中上提或掉下去。Fold Balancechart声带振动厚薄与闭合状态的连续配比。Singer's Formant Monitorchart2–4 kHz 的金属芯。发声平衡里「紧致」这一端主要看它。

L2 · Advanced

Tongue Positionchart舌根前后。后缩会把喉位和元音一起拽乱。Tongue Front Viewchart舌头前部的冠状切面，配合元音看舌位。Formant TrackerchartF1 / F2 轨迹，看元音有没有被喉位或舌位带跑。Source-Filter Analysischart把声音拆成声源（声带）与滤波器（声道）两层，看喉位舌位改的是哪一层。Velum Positionchart软腭开合。没抬起来时，鼻音会吃掉口腔共鸣。Vocal Tract Side Profilechart把喉、舌、软腭放在同一侧视图里一起看。

L3 · Expert

H1-H2 Harmonic Ratiochart厚薄曲线。看声带是偏厚、偏薄，还是停在中间。
Throat Voice Warningchart喉外肌代偿超标时亮起。平衡分会被直接拉低。

Dynamic Balance

动态平衡

From soft to loud, brightness (SPR) stays on a level track — never suddenly dull and breathy, never squeezed and bright.

Parameters

Loudness传入的音量。动态平衡看的是音量变的时候，音色有没有一起散掉或挤死。Parameter guide
Jitter周期间的音高抖动。过大说明声带振动不稳。Parameter guide
Shimmer周期间的振幅抖动。和 Jitter 一起读声音稳不稳。Parameter guide
Vibrato rate颤音每秒来回的次数。稳定颤音大约落在 5.5–7.5 Hz。Parameter guide
Vibrato extent颤音上下偏离音高的幅度，通常大约 ±25–50 音分。Parameter guide
SPR歌手共振峰比。2–4 kHz 高频能量与整体能量的比值，读声音的金属芯与穿透力。Shared edge · used here as the brightness axis: SPR should not jump as volume sweeps soft to loud.Parameter guide

L1 · Phonation Basics

Loudness Meterchart实时音量。动态平衡图的横轴就来自这里。
Waveformchart振幅随时间的变化，先看见强弱，再看音色有没有跟着变形。

L3 · Expert

Voice StabilitychartJitter、Shimmer 和颤音是否还在可控范围。Sustain Challengechart持续一个音，看稳定度和漏气会不会随时间变差。Vibrato Trackerchart速率、幅度和是否均匀。匀速颤音是动态能稳住的一个标志。

Airflow Balance

气流平衡

From low to high pitch, efficiency (NAQ) stays in the high-efficiency channel: neither pressed nor leaky.

Parameters

GNE声门噪声激励。越高，漏气感越明显。Parameter guide
Onset slope声音起振的快慢。太猛是挤着起，太慢是漏着起。Parameter guide
NAQ归一化振幅商，读声门闭合效率——既不挤死也不漏气的程度。Shared edge · defines the efficient channel: NAQ separates pressed, flow and leaky phonation.Parameter guide

L1 · Phonation Basics

Vocal Fold Closurechart用 NAQ 看闭合是紧闭、流畅，还是漏气。Onset Detectionchart起音落在硬起、平衡起，还是气声起。

L3 · Expert

Breathiness Detectionchart当前这一下有没有气声过多。

Axis · signals every face starts from

The signal layer every face reads before making its judgment: pitch, spectrum and symptom roll-ups.

Parameters

F0基频。音高图读它，气流平衡图用它当横轴。Parameter guide

L0 · Health Overview

Pitch DetectionchartF0 曲线。三个平衡的判断都要先知道现在唱在哪个音上。Pitch Recordingchart录下整段音高曲线，回放时对着看音准与走向。Warm-Up / Cool Downchart跟着引导做热身与放松，练习前后的状态对比就看它。Symptom Detectionchart把喉音、漏气、不稳等读数收成当前能看出的问题。Vocal Health Scorechart综合症状与稳定度给出的健康读数，不是某一面的平衡分。

L2 · Advanced

Spectrumchart当前一帧的谐波结构。H1–H2、SPR、共振峰都从这里取。Spectrogramchart时间 × 频率的能量。三个面上的参数都能在这里对上痕迹。